package org.jopenray.rfb;

//
//  Copyright (C) 2003 Constantin Kaplinsky.  All Rights Reserved.
//
//  This is free software; you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation; either version 2 of the License, or
//  (at your option) any later version.
//
//  This software is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this software; if not, write to the Free Software
//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
//  USA.
//

//
// CapsContainer.java - A container of capabilities as used in the RFB
// protocol 3.130
//

import java.util.Hashtable;
import java.util.Vector;

class CapsContainer {

	// Public methods

	public CapsContainer() {
		infoMap = new Hashtable(64, (float) 0.25);
		orderedList = new Vector(32, 8);
	}

	public void add(CapabilityInfo capinfo) {
		Integer key = new Integer(capinfo.getCode());
		infoMap.put(key, capinfo);
	}

	public void add(int code, String vendor, String name, String desc) {
		Integer key = new Integer(code);
		infoMap.put(key, new CapabilityInfo(code, vendor, name, desc));
	}

	public boolean isKnown(int code) {
		return infoMap.containsKey(new Integer(code));
	}

	public CapabilityInfo getInfo(int code) {
		return (CapabilityInfo) infoMap.get(new Integer(code));
	}

	public String getDescription(int code) {
		CapabilityInfo capinfo = (CapabilityInfo) infoMap
				.get(new Integer(code));
		if (capinfo == null)
			return null;

		return capinfo.getDescription();
	}

	public boolean enable(CapabilityInfo other) {
		Integer key = new Integer(other.getCode());
		CapabilityInfo capinfo = (CapabilityInfo) infoMap.get(key);
		if (capinfo == null)
			return false;

		boolean enabled = capinfo.enableIfEquals(other);
		if (enabled)
			orderedList.addElement(key);

		return enabled;
	}

	public boolean isEnabled(int code) {
		CapabilityInfo capinfo = (CapabilityInfo) infoMap
				.get(new Integer(code));
		if (capinfo == null)
			return false;

		return capinfo.isEnabled();
	}

	public int numEnabled() {
		return orderedList.size();
	}

	public int getByOrder(int idx) {
		int code;
		try {
			code = ((Integer) orderedList.elementAt(idx)).intValue();
		} catch (ArrayIndexOutOfBoundsException e) {
			code = 0;
		}
		return code;
	}

	// Protected data

	protected Hashtable infoMap;
	protected Vector orderedList;
}
